Laird RM126 Series, Руководство пользователя

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The RM126x Development Kit features a Qwiic® connector compatible with Qwiic Connect System hardware. The Qwiic
connector provides an easy way to expand the functionality of the RM126x Development Kit with sensors, LCDs, and other
peripherals over the I
2
C interface. The Qwiic connector is a 4-pin polarized JST connector, which ensures the cable is inserted
the right way.
Qwiic Connect System hardware is daisy chainable as long as each I
2
C device in the chain has a unique I
2
C address.
Note: The Qwiic I
2
C connections on the RM126x Development Kit are shared with the mikroBUS I
2
C signals.
The Qwiic connector and its connections to Qwiic cables and the RM126x are illustrated in the figure below.
Figure 10: Qwiic connector
The table below gives an overview of the Qwiic connections to the RM126x.
Table 5: Qwiic connections to RM126x
Qwiic
Pin
Connection Shared Feature
Suggested
Peripheral
Mapping
Ground GND Ground
3.3V VMCU1 RM126x voltage domain
SDA PD03 Default (via solder bridge SB11): MIKROE_SPI_MOSI,
Optional (cut solder bridge SB11):
QWIC_I2C_SDA (via shorting solder bridge (SB10)
I2Cx.SDA
SCL PD02 Default (via solder bridge SB7): MIKROE_SPI_MISO,
Optional (cut solder bridge SB7):
QWIC_I2C_SCL (via shorting solder bridge (SB6)
I2Cx.SCL
The debug USB port can be used for uploading code, debugging, and as a Virtual COM port. More information is available
in
Debugging section.
VMCU1
GND
QWIIC_I2C_SCL
QWIIC_I2C_SDA
1
2
3
4
5
6
P202
WCON, WF1001-WM04ER1